Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

What is consciousness, The importance of the brain in our everyday lives ca...

The importance of the brain in our everyday lives can never be underestimated. The brain has physical properties that are in a constant state of flux. The brain never rests totally

Arboriculture, Arboriculture : It deals with the cultivation of ornamental ...

Arboriculture : It deals with the cultivation of ornamental plants. Arboriculture is the cultivation, management or study of individual shrubs, trees, vines, or other perennial woo

Determine the ideal clinical conditions of teeth, The ideal clinical condit...

The ideal clinical conditions of teeth which we know already include: - the absence of pain. - less than 0.1 mm initial hori-ontal mobility under lateral forces of less than

Pollutions, what is detergent pollution and it''s effects and causes

what is detergent pollution and it''s effects and causes

What is rigor mortis, Q. What is rigor mortis? Dead bodies are at first...

Q. What is rigor mortis? Dead bodies are at first limp. Many hours after death, skeletal muscles undergo a partial contraction that fixes the joints. This condition, called rig

Explain metabolism of iron, Explain Metabolism of Iron? In this sub-sec...

Explain Metabolism of Iron? In this sub-section, we will study how body gets its iron supply, how iron is transported and utilized by the various tissues and how iron balance i

What are the major morphological features of birds, Q What are the major mo...

Q What are the major morphological features of birds? Birds are animals that present aerodynamic bodies covered with feathers, pneumatic bones, anterior limbs transformed into

Define advantages and disadvantages of swab method, Define Advantages and D...

Define Advantages and Disadvantages of Swab Method? Advantages of Swab Method 1. Suitable for flexible, uneven and heavily contaminated surfaces. 2. Rapid, simple and ine

What is the peripheral nervous system, Define the Peripheral Nervous Syste...

Define the Peripheral Nervous System (PNS) Peripheral nervous system consists of cranial and spinal nerves. There are twelve pairs of cranial nerves. They arise from brain.

Describe surgical closure of patent arteriosus technique, Describe Surgical...

Describe Surgical Closure of Patent Ductus Arteriosus technique? The patient is positioned in right lateral position and a left posterolateral thoracotomy is done. In infants

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd